Human PH

Reference data and engineering information about human ph for physiology applications.

human

Overview

Engineering reference data for Human PH in physiology.

Key Formulas

Basal Metabolic Rate

$BMR \propto M^{0.75}$

Kleiber's law — metabolic rate scales with body mass.

Heat Loss

$Q = hA(T_{skin} - T_{air})$

Convective heat loss from body.

Variables

Symbol	Description	Unit
$Q$	Heat loss	W
$h$	Heat transfer coefficient	W/(m²·K)
$A$	Body surface area	m²

While the overview establishes normal human blood pH, it's important to understand that different bodily systems maintain distinct pH ranges optimized for their specific functions. These variations are critical for processes like digestion, enzymatic activity, and maintaining homeostasis. Deviations from these ranges can indicate specific physiological conditions or disorders.

9 rows

Typical pH ranges for various human biological fluids and materials.
Biological Material	Typical pH Range
Bile	6.8 - 7.0
Blood	7.35 - 7.45
Duodenal contents	4.8 - 8.2
Feces	4.6 - 8.4
Gastric contents	1.0 - 3.0
Milk	6.6 - 7.6
Saliva	6.5 - 7.5
Spinal fluid	7.3 - 7.5
Urine	4.8 - 8.4

Source: engineeringtoolbox.com

References

Original Source